Production,chemical composition,and fatty acid profile of milk from buffaloes fed with cupuaçu (Theobroma grandiflorum) cake and murumuru (Astrocaryum murumuru) cake in the Eastern Amazon     

André Guimarães Maciel e Silva  Suely Cristina Gomes de Lima  Pedro Danilo de Oliveira  Michel dos Santos Moraes  Célia Maria Costa Guimarães  Jamile Andréa Rodrigues da Silva  Alexandre Rossetto Garcia  Benjamim de Souza Nahúm  Lilaine de Sousa Neres  Gerlane Nunes Noronha  José de Brito Lourenço Júnior 《Animal Science Journal》2021,92(1):e13576

The objective was to evaluate the effect of concentrate supplementation using by-products of the Amazonian industry on milk production, milk composition, and milk fatty acid profile of dairy buffaloes. Twelve lactating buffaloes (544.5 ± 35.6 kg, 6.4 ± 2.2 years old, 59 ± 6 days in milk) were allotted in a pasture of Mombaça grass and managed under rotational grazing (4 days occupancy/28 days rest). A 3 × 3 Latin square was adopted, and each animal alternately received three supplementary treatments based on corn bran + soybean meal or cupuaçu cake or murumuru cake for 21 days per treatment. Murumuru cake increased the levels of lauric acid and myristic acid in the milk (p < 0.05). Murumuru cake reduced the unsaturated fatty acid contents in the milk compared with animals fed control diet or cupuaçu cake (24.27% vs. 25.24% vs. 25.08%). The n-6/n-3 ratio was 2.6, 1.97, and 2.0 in the control, cupuaçu, and murumuru groups, respectively. Based on this parameter, cakes made from cupuaçu as well as murumuru could be considered to be adequate for inclusion in dairy water buffalo feed. However, the murumuru cake addition requires some caution because its use induces the secretion of higher levels of lauric and myristic fatty acids that are related to human cardiovascular disease.  相似文献   

2n Gamete formation in the genus Brachiaria (Poaceae: Paniceae)   总被引：1，自引：0，他引：1  

Patrícia Helena Gallo  Pamela Lonardoni Micheletti  Kellen Regina Boldrini  Claudicéia Risso-Pascotto  Maria Suely Pagliarini  Cacilda Borges do Valle 《Euphytica》2007,154(1-2):255-260

Microsporogenesis of several Brachiaria species of the Brazilian collection at Embrapa Beef Cattle has been analyzed in detail. This paper reports abnormal cytokinesis in three accessions of three different species (Brachiaria humidicola, 2n = 4x = 36, Brachiaria decumbens, 2n = 4x = 36, and Brachiaria dura, 2n = 6x = 54). Chromosomes paired in bi-, tri-, and quadrivalents in these accessions, whereas chromosome segregation at meiosis I was characterized by exclusion of laggards as micronuclei. In a high number of meiocytes, the first sign of cytokinesis appeared only in metaphase II and did not divide the meiocyte into a dyad. Total absence of cytokinesis was also detected among meiocytes in the second division. Since in both cases the two metaphase plates were very close, they favored the rejoining of chromosome sets after anaphase II and formed a restitutional nucleus in telophase II. Second cytokinesis occurred after telophase II in most meiocytes. Monads, dyads, and triads with n or 2n nuclei were observed among meiotic products. The 2n gametes observed correspond to the first division restitution (FDR). The number of affected cells in each accession was variable, but the number of microspores with restitutional nucleus, including those scored in tetrads and the released ones, did not exceed 9%. Although polyploidy is common in the genus Brachiaria, its origin is still unclear. Current results suggest that 2n gametes may have contributed to the evolutionary history of the genus.  相似文献   

Physicochemical parameters,fatty acid profile,and sensory attributes of meat from lambs fed with cassava dregs in replacement of corn     

Cardoso  Daniel Barros  Véras  Robson Magno Liberal  de Carvalho  Francisco Fernando Ramos  Magalhães  André Luiz Rodrigues  de Vasconcelos  Gustavo Araújo  Maciel  Maria Inês Sucupira  Madruga  Marta Suely  Urbano  Stela Antas  de Lima Silva  Janaina 《Tropical animal health and production》2019,51(6):1515-1521

Tropical Animal Health and Production - The objective of this study was to evaluate the effect of the replacement of corn by cassava dregs (0, 33, 66, and 100%) in the diet of lamb on...  相似文献   

Different approaches for modeling grouped survival data: A mango tree study     

Suely Ruiz Giolo  Enrico Antonio Colosimo  Clarice Garcia Borges Demétrio 《Journal of Agricultural, Biological & Environmental Statistics》2009,14(2):154-169

Interval-censored survival data, in which the event of interest is not observed exactly but is only known to occur within some time interval, occur very frequently. In some situations, event times might be censored into different, possibly overlapping intervals of variable widths; however, in other situations, information is available for all units at the same observed visit time. In the latter cases, interval-censored data are termed grouped survival data. Here we present alternative approaches for analyzing intervalcensored data. We illustrate these techniques using a survival data set involving mango tree lifetimes. This study is an example of grouped survival data.  相似文献   

Production,chemical composition,and economic viability of Minas Frescal cheese from buffaloes supplemented with açai seed     

de Oliveira  Wildiney Freire  de Lima  Elizanne Moura  de Freitas  Denise Ribeiro  dos Santos  Suely Sousa  Reis  Grazielle Carvalho  Gomes  Daiany Iris  Alves  Kaliandra Souza  Maciel  Raylon Pereira  Vargas  Julián Andrés Castillo  Mezzomo  Rafael 《Tropical animal health and production》2020,52(5):2379-2385

Tropical Animal Health and Production - We aimed to evaluate the chemical composition, production yield, and economic viability of Minas Frescal cheese produced with milk from buffaloes...  相似文献   

Analysis of meiotic behavior in selecting potential genitors among diploid and artificially induced tetraploid accessions of Brachiaria ruziziensis (Poaceae)     

Maria Suely Pagliarini  Claudicéia Risso-Pascotto  Alice Maria de Souza-Kaneshima  Cacilda Borges do Valle 《Euphytica》2008,164(1):181-187

Sexuality is correlated with diploidy and apomixis with polyploidy in the Brachiaria genus. Brachiaria ruziziensis is a key species in Brachiaria breeding due to its obligate sexuality and intrinsic agronomic qualities. Interspecific crosses in the genus became feasible only when a few diploid accessions of B. ruziziensis were artificially tetraploidized and remained sexual. Hybridization has been done since, using natural tetraploid apomictic accessions of B. brizantha or B. decumbens as pollen donors. Twenty two accessions of B. ruziziensis from the Embrapa Beef Cattle germplasm collection (Campo Grande, MS, Brazil) were cytologically analyzed: 16 are natural diploids (2n = 2x = 18) and six are artificially induced tetraploids (2n = 4x = 36). The meiotic behavior in the 16 diploid accessions varied. The mean of meiotic abnormalities per accession ranged from zero to 24.46%. Meiotic behavior in the induced tetraploid accessions also varied with the mean of meiotic abnormalities ranging from 5.20% to 54.71%. The most common abnormalities observed in both the diploid and the tetraploid accessions, were those related to irregular chromosome segregation. In one tetraploid accession, with a high frequency of those, other irregularities involving chromosome orientation at metaphase plate and chromosome convergence to the poles, a meiotic mutation known as divergent spindle, were recorded. Meiotic behavior should be considered in selecting potential genitors for breeding.  相似文献   

Spatiotemporal dynamics and modelling support the case for area-wide management of citrus greasy spot in a Brazilian smallholder farming region     

Francisco F. Laranjeira  Suely X. B. Silva  Rachel E. Murray-Watson  Ana C. F. Soares  Hermes P. Santos-Filho  Nik J. Cunniffe 《Plant pathology》2020,69(3):467-483

Citrus greasy spot (CGS), caused by Zasmidium citri, induces premature defoliation and yield loss in Citrus spp. The epidemiology of CGS is well understood in high humidity areas, but remains unaddressed in Brazil, despite differing climatic conditions and disease management practices. The spatiotemporal dynamics of CGS were characterized in the Recôncavo of Bahia (Brazil) at four hierarchical levels (quadrant, plant, grove, and region). A survey conducted in 19 municipalities found the disease to be present throughout the region with an incidence of 100% in groves and plants, and higher than 70% on leaves. Index of dispersion (D) values suggest the spatial pattern of units with symptoms lies between random and regular. This was confirmed by the parameters of the binary power law for plants and their quadrants (log[A] < 0 and b < 1). No consistent differences were observed in the disease incidence at different plant heights. We introduce a compartmental model synthesizing CGS epidemiology. The collected data allow such a model to be parameterized, albeit with some ambiguity over the proportion of new infections that result from inoculum produced within the grove versus external sources of infection. By extending the model to include two populations of growers—those who control and those who do not—coupled by airborne inoculum, we investigate likely performance of cultural controls accessible to citrus growers in northeastern Brazil. The results show that control via removal of fallen leaves can be very effective. However, successful control is likely to require area-wide strategies in which a large proportion of growers actively manage disease.  相似文献   

Altered telomeres in tumors with ATRX and DAXX mutations     

Heaphy CM  de Wilde RF  Jiao Y  Klein AP  Edil BH  Shi C  Bettegowda C  Rodriguez FJ  Eberhart CG  Hebbar S  Offerhaus GJ  McLendon R  Rasheed BA  He Y  Yan H  Bigner DD  Oba-Shinjo SM  Marie SK  Riggins GJ  Kinzler KW  Vogelstein B  Hruban RH  Maitra A  Papadopoulos N  Meeker AK 《Science (New York, N.Y.)》2011,333(6041):425

The proteins encoded by ATRX and DAXX participate in chromatin remodeling at telomeres and other genomic sites. Because inactivating mutations of these genes are common in human pancreatic neuroendocrine tumors (PanNETs), we examined the telomere status of these tumors. We found that 61% of PanNETs displayed abnormal telomeres that are characteristic of a telomerase-independent telomere maintenance mechanism termed ALT (alternative lengthening of telomeres). All of the PanNETs exhibiting these abnormal telomeres had ATRX or DAXX mutations or loss of nuclear ATRX or DAXX protein. ATRX mutations also correlate with abnormal telomeres in tumors of the central nervous system. These data suggest that an alternative telomere maintenance function may operate in human tumors with alterations in the ATRX or DAXX genes.  相似文献   

Mutations in CIC and FUBP1 contribute to human oligodendroglioma     

Bettegowda C  Agrawal N  Jiao Y  Sausen M  Wood LD  Hruban RH  Rodriguez FJ  Cahill DP  McLendon R  Riggins G  Velculescu VE  Oba-Shinjo SM  Marie SK  Vogelstein B  Bigner D  Yan H  Papadopoulos N  Kinzler KW 《Science (New York, N.Y.)》2011,333(6048):1453-1455

Oligodendrogliomas are the second most common malignant brain tumor in adults and exhibit characteristic losses of chromosomes 1p and 19q. To identify the molecular genetic basis for this alteration, we performed exomic sequencing of seven tumors. Among other changes, we found that the CIC gene (homolog of the Drosophila gene capicua) on chromosome 19q was somatically mutated in six cases and that the FUBP1 gene [encoding far-upstream element (FUSE) binding protein] on chromosome 1p was somatically mutated in two tumors. Examination of 27 additional oligodendrogliomas revealed 12 and 3 more tumors with mutations of CIC and FUBP1, respectively, 58% of which were predicted to result in truncations of the encoded proteins. These results suggest a critical role for these genes in the biology and pathology of oligodendrocytes.  相似文献   

Meiotic behavior as a selection tool in the breeding of <Emphasis Type="Italic">Brachiaria humidicola</Emphasis> (Poaceae)     

Kellen?Regina?Boldrini  Eleniza?de?Victor Adamowski  Hugo?Message  Vergílio?Calisto  Maria?Suely?PagliariniEmail author  Cacilda?Borges?do?Valle 《Euphytica》2011,182(3):317-324

Brachiaria humidicola is a tropical grass that grows in seasonally swampy grasslands in Africa. In Brazil, two apomictic cultivars (2n = 54) of this species are widely used as pastures in poorly drained soils. The recent discovery of a sexual polyploid accession (2n = 36) in the germplasm collection at the Embrapa Beef Cattle Research Center allowed intraspecific hybridization with the objective of broadening the genetic variability and selection of superior genotypes in this species. Hybridization, however, depends on accessions with the same ploidy level. Cytological analyses of 55 accessions revealed that 19 apomictic accessions also presented 2n = 36 chromosomes. Chromosome pairing in hexavalent association at diakinesis and metaphase I suggested that the basic chromosome number for this species is x = 6. Cytological analysis revealed abnormalities in variable frequencies in the meiosis of these hexaploid (2n = 6x = 36) accessions. The most common were those related to irregular chromosome segregation which led to unbalanced gamete formation, but chromosome stickiness was also recorded. These results clearly demonstrate the value of cytogenetics in the choice of genitors and for superior hybrids to be obtained in the breeding of this species. For that both the ploidy level and the frequency of abnormalities need to be considered, besides other favorable agronomic characteristics.  相似文献